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  1. #include <iostream>
  2. #include <string>
  3. #include <vector>
  4. std::vector<size_t> CountSymbolsAppearing(const std::string &text) {
  5.   std::vector<size_t> symbols_appearing(256, 0);
  6.   for (auto symbol : text) {
  7.     ++symbols_appearing[symbol];
  8.   }
  9.   return symbols_appearing;
  10. }
  11.  
  12. char SymbolFromIndex(size_t symbol_index) {
  13.   return static_cast<char>(symbol_index);
  14. }
  15.  
  16. void ShowSymbolAppearingInfo(char symbol, size_t number_of_appears) {
  17.   if (number_of_appears != 0) {
  18.     std::cout << "[" << symbol << " ] = " << number_of_appears << '\n';
  19.   }
  20. }
  21.  
  22. void ShowText(const std::string &text) {
  23.   std::cout << "text: " << text << '\n';
  24. }
  25.  
  26. void ShowSymbolsAppearing(const std::vector<size_t> &symbols_appearing) {
  27.   for (size_t symbol_index = 0; symbol_index < symbols_appearing.size();
  28.        ++symbol_index) {
  29.     ShowSymbolAppearingInfo(SymbolFromIndex(symbol_index),
  30.                             symbols_appearing.at(symbol_index));
  31.   }
  32. }
  33.  
  34. int main() {
  35.   std::string text = "this is test string";
  36.   ShowText(text);
  37.   ShowSymbolsAppearing(CountSymbolsAppearing(text));
  38. }
  39.  
Success #stdin #stdout 0s 3228KB
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Standard input is empty
stdout
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text: this is test string
[  ] = 3
[e ] = 1
[g ] = 1
[h ] = 1
[i ] = 3
[n ] = 1
[r ] = 1
[s ] = 4
[t ] = 4
https://ideone.com/rdMiSn
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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